Revenue (Tables)

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table disaggregates components of the Company's revenue:

	Three Months Ended March 31,
(In millions)	2023		2022
Marsh:
EMEA (a) (b)	$	932	$	869
Asia Pacific (a)	312		294
Latin America	115		104
Total International	1,359		1,267
U.S./Canada	1,385		1,279
Total Marsh	2,744		2,546
Guy Carpenter	1,071		999
Subtotal	3,815		3,545
Fiduciary interest income	91		4
Total Risk and Insurance Services	$	3,906	$	3,549
Mercer:
Wealth (c)	$	581	$	617
Health	545		524
Career	218		202
Total Mercer	1,344		1,343
Oliver Wyman Group (b)	687		667
Total Consulting	$	2,031	$	2,010

(a) Starting in the first quarter of 2023, the Company began reporting the Marsh India operations in EMEA. Prior year results for India have been reclassified from Asia Pacific to EMEA for comparative purposes.

(b) Revenue in 2022 includes the loss on deconsolidation of the Company's Russian businesses at Marsh and Oliver Wyman of $27 million and $12 million, respectively.

(c) Revenue in 2023 includes the loss on sale of a small individual financial advisory business in Canada of $19 million.

Schedule of Contract with Customer, Asset and Liability

The following table provides contract assets and contract liabilities information from contracts with customers:

(In millions)	March 31, 2023		December 31, 2022
Contract assets	$	366	$	335
Contract liabilities	$	906	$	837